PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 353 



Vol. VII, No. 23. IVashiiig^ton, ». C. Sept. 17, 1884. 



subfamily, distinguished by the uormal narial apertures anterior near 

 the posterior, the acute teeth, and the development of teeth on the pal- 

 atine as well as vomer. 



ANALYSIS OF GENERA. 



I. Interorbital area not flat uor separated from the occipital region, with the median 



and lateral crests ^procurrent on it, and with the frontal narrowed for- 

 wards. 



1. Prefrontals with the articular facets arising from diverging V-shaped ridges; 



basispheuoid with an anterior lobiform extension. 



a. Fronto-occipital crest ceasing far from point of frontal ; prefrontals with pos- 



terior areas impressed, long and cribriform ; pterygoids edentulous ; gill- 

 rakers few LUTJANUS. 



b. Fronto-occipital crest continued on ethmoid ; prefrontals with posterior areas 



short and excavated above and in front ; pterygoids dentigerous ; gill- 

 rakers numerous OcYURUS. 



2. Prefrontals with the articular facets developed from simple tubercles, and not 



V-shaped ridges ; basispheuoid not lobigerous. 

 a. Prefrontals with the posterior areas cribriform ; ophisthotics with nearly simple 



processes ; vomer with an elongated posterior dentigerous crest ; pterygoids 



dentigerous Rhomboplites. 



i. Prefrontals with the posterior areas solid and somewhat tumid ; opisthotics 



with bifurcate processes; vomer incurved and toothless behind its chevron; 



pterygoids toothless Tropidinius. 



II. Interorbital area flat, separated by a transverse line of demarcation from the 



occipital, by which the median as well as the lateral crests are limited; 

 frontals wide in front. 



1. Frontals not cavernous, but simply normally perforate ; postfrontals, behind, with 



funnel-shaped foramina ; supraorbital margins crenate. 

 a. Periotic region much swollen outwards, and with the bones thin and polished. 



Platyinius. 

 i. Periotic region little convex, and with the bones thick and unpolished . . Etelis. 



2. Frontals cavernous (like those of Sciaenids) with longitudinal osseous bars leav- 



ing interspaces in front of tranverse ridge, and on each side near the front ; 

 prefrontals, behind, with simple foramina for olfactory ; supraorbital mar- 

 gins smooth Verilus. 



DESCRIPTIONS OF CRANIAL CHARACTERISTICS. 



LUTJANUS. 



PARTIAL SYNONYMY. 



=Lutjanu8, Bloch, t. 7, p. 324, 1797. 



=Lutjanus, GUI, Proc. Acad. Nat. Sc. Phila., 1862, pp. 236-237. 



=TiUtjanu8, Poey, Annals Lyceum Nat. Hist. N. Y., v. 10, p. 62, 1871. 



Interorbital area not flat uor separated from the occipital region, with 



the median and lateral crests procurrent on it, and with the frontal 



narrowed forwards ; prefrontals with the articular joints arising from 



diverging V-shaped ridges with posterior areas impressed and often 



Proc. Nat. Mus. 84 — —23 



